Well, you can use heat tolerant plants such as really profitable spicey peppers, okra, some tomatoes, some egg plant...and plant your heat tolerant greens in between or under them. Certain spinach, mustard, collards, chard, simpson lettuce, komatsuna. Lets not forget about edibles, beet greens, amaranth leaves, purslane, orach. Lots of possibilities.
These things help too.
